https://www.clarecountycleaver.net/stories/sleuthing-in-history-the-tatman-house-in-clare,6750?fbclid=IwAR2ruEqqBR0VQGq7Fsmh4iXjj0xxs9PbF7PaiwCQu-o1E6CovEpvR23Cpys

Article  mention  Floyd Allen and his siblings, and possibly our great grandfather under the name of Robert Armstrong Allen. If not,  he is related somehow.