I have several different lineages that connect me to Robert the Bruce. I haven't documented any of these past 8th great grandparents but I believe it's likely he is a grandparent of some degree. Three different paths shown here on Geni. 22nd grandfather, 21st grandfather and 19th grandfather. Lineages are through Elizabeth De Burgh and Isabella van Mar. Wikitree says he is a 2nd cousin 18 times removed. Guess I need to hunker down and do the research but wonder if anyone else has discrepancies like this.