Lancaster, England's interim head coach, represented Scotland at under-19 level and he still has relatives on his mother's side of the family living north of the border.
"My mum is biased towards me so she's obviously hoping it goes well (for England),'' said Lancaster, who will take charge of England for the first time on Saturday.
"My relations north of the border have mixed feelings, it's fair to say, but
they hope that it goes well for me.''
Although Lancaster once wore a thistle on his chest, the central theme to his reign as England's caretaker boss has been to restore a sense of pride and honour in the red rose.
England's World Cup squad came home from the World Cup in New Zealand with their passion and commitment in question after a campaign dogged by controversy ended in a quarter-final defeat to France.
Lancaster felt the players had lost focus on why they wanted to play for
England, who it was they represented and what the rose stood for.
In Lancaster's four-stage coaching philosophy, establishing those values within the squad was the foundation upon which everything else can be built.
"I got an email today listing the number of capped England players since 1871. There have been 1,322,'' Lancaster said.
"You are joining a very, very exclusive club over the last 130 years. That in itself gives you a responsibility.
"Alongside that for me there is a responsibility to represent your country,
and everyone who has supported you on your journey.''
Former Manchester United captain Gary Neville was among the guest speakers brought in during England's training camp in Leeds to reinforce the message.
The number of new caps will rise to at least 1,325 on Saturday after Owen Farrell, Brad Barritt and Phil Dowson were named in the starting line-up to face Scotland.
Lancaster has also named a further five uncapped players on the bench in a new-look England squad.
Each squad member has received a letter from someone close to them, explaining just what it means to people to see him playing for England.
"You can imagine how powerful it is, to receive something like that - whether it's just a few comments from your parents or a coach, or your school teacher who helped you on your journey,'' Lancaster said.
"They said a few words about what it means to them to see you play for your country. It was the best way I could get people to understand, it's not just about you, it's about everyone around you when you play for England.''
Lancaster is attempting to whip up the same kind of national pride that is
considered to come easier to Celtic nations than to some Englishmen.
"From an England point of view, you can see the power of the nation's support behind a sport that is successful,'' Lancaster said.
"You saw that in 2003 (the World Cup) and when England won the Ashes cricket (in 2005), or the football at Euro 96.
"That spirit that binds the English nation is probably the most powerful force and what we've got to do is harness that and try to give them a team to cheer about.''
Lancaster played and coached at Leeds, spending two years as the club's director of rugby - only one of them in the Premiership - before moving to the Rugby Football Union.
His coaching credentials have come in for criticism but Lancaster rejected the notion he was too "touchy-feely'' over his determination to set the right environment.
Lancaster believes in his philosophies to such an extent that he took a few seconds to decide whether he would take an ugly 6-3 victory at Murrayfield on Saturday.
Ultimately he would, but Lancaster's big test will be whether he retains that faith in his approach even if the results do not go according to plan.
"Yes, the reputation of English rugby has been damaged but that is not why we have done all this. The only reason is to help the team be successful,'' Lancaster said.
"That is the only driver behind it. It's a new team and you have got to build
foundations from somewhere.
"I am driven a lot by performance in terms of my philosophy. If England are going to be successful long term, the quality of the performance has to be a big driver - but yes, this is international rugby, we'd take a 6-3 win.''
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