Our Summerell line came from South Wales to Durham. So there was a connection there already. Tom Summerell b. 1858 was born Cwmavon Trevethin, South Wales. At some point moved to Durham where he met Margaret Simpson (b. Penshaw 1861) and they married at Houghton le Spring 1878. Isabella Summerell was born at Penshaw soon after. (rather soon after
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I have Tom Summerell's parents as John Summerell and Emily Knowles, but have nothing else on this pair. It's quite possible there were more Summerells remaining in Durham and that is where Lawrence ended up.