Trace the direct line back ONLY to the starting ancestor, while gathering any children/possible children and siblings/possible siblings as you go, but DO NOT focus on them. Do NOT use collected research, unless you hit a brick wall. If you do need to use it for a brick wall, then use it very loosely.
Follow more descendancy research tips below, and other research tips in Genealogy Research Tips.
Rule #1 of Finding Living Descendants in Your Family Tree
Rule #3 of Finding Living Descendants in Your Family Tree
Step #1 After You've Found a Living Descendant
Step #2 After You've Found a Living Descendant
Step #3 After You've Found a Living Descendant
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