Chelsea Pension admission and discharge

[ptdrifter]

I have an ancestor, Bartholomew Dickinson who may be the man listed in 1717 In the Chelsea pensioner admission and discharges.
It looks like he was in the 3rd Regiment of Foot guards, which I believe are now the Scots guards. His listing just states a dismissed man of Rosse's Dragoons, which I haven't had much luck tracing.
It doesn't list his age or years of service .
Does anyone know if you had to be Scottish to join the Scots Guards in the 1700 -1800's?

Any help or further info appreciated

[Ashtone]

His listing just states a dismissed man of Rosse's Dragoons, which I haven't had much luck tracing.

Possibility for Ross/Rosse:

https://en.wikipedia.org/wiki/Charles_Ross_(British_Army_officer,_born_1667)

https://en.wikipedia.org/wiki/History_of_the_Scots_Guards_(1642%E2%80%931804)

[Andy J2022]

I would agree with Ashtone's suggestion that Rosse's Dragoons is probably a reference to The King's Own Regiment of Scottish Horse which was commanded by Charles Ross(e) at that time.

And from 1686 the 3rd Regiment of Foot Guards were on the English establishment, meaning that they were no longer exclusively a Scottish Regiment, and so there would be some English among their recruits, especially when the Regiment was stationed outside Scotland. If he joined up at around the end of the seventeenth century or early eighteenth, the regiment was fighting in the Low Countries and so would have taken recruits from wherever they could find them.   

[ptdrifter]

Thank you both for the replies. The record I have is from Dec 1717 so I suspect he joined up towards the end of the 17th, beginning of the 18th century, so not necessarily Scottish then.