Saint George was an only child.
Judith St. George had 4 siblings.
If he had any siblings there is no record of them.
George Whitefield was one of seven siblings.
Saint Patrick had two sisters.
Saint Rita had two siblings: a brother named Antonio and a sister named Maria.
If Saint George had any brothers or sister is not known as no records have been found that might answer that question.
Judith St. George had 4 siblings.
If he had any siblings there is no record of them.
George Shelley has 7 siblings
1 ; Nate Saint
George Whitefield was one of seven siblings.
Saint Patrick had two sisters.
Judith St. George had 4 siblings.
Saint Rita had two siblings: a brother named Antonio and a sister named Maria.
George Shelley has 7 siblings
King George III is not a saint nor a patron saint. Are you sure you do not have him confused with Saint George?
We do not know how many siblings Peter might have had but we do know he had at least one brother named Andrew.