Emmerdale's Al Chapman 'related to Chas' as fans 'expose' identity of adoptive mum

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Emmerdale's Al Chapman could be related to Chas Dingle in what would be a huge twist, as fans are sure they've figured out the identity of his adoptive mum.Earlier this week it emerged that Al's adoptive father had died - and with the funeral fast approaching, it makes sense that viewers might be about to meet his adoptive mum.Now viewers are sure that they've exposed her identity ahead of time, and think she could be in some way related to Faith Dingle, Chas' mum.READ NEXT: Love Island's bombshell Charlie had sights set on 3 Islanders before entering villaEven though the relation wouldn't be by blood, it would throw some doubt over their relationship if Faith ended up being the long lost sister of Al's mum.Taking to Twitter to air their theories, one fan penned: "#Emmerdale pretty sure there’ll be a twist at Al’s dad’s funeral and his adoptive mum will be related to Faith somehow."They added: "Not incest exactly but it will muddy the waters with Chas if they’re going to get it on!"The fan went on to joke that Rodney could turn out to be Al's real dad, quipping: "Then again, Rodney is a bit of a s***!"It comes after theories that Al could have been Faith's biological son, which would mean he and Cain are related amid their fiery feud.One poster penned: "I think [Faith's] secret is that Al is her son who she had adopted before she married Shadrach and he and Cain are half brothers."Remember when Al first came in, he said he was adopted but was never happy and always felt unloved."For more of the latest showbiz news from Daily Star, make sure you sign up to one of our newsletters here.As another added: "That would also mean that Chas and Al are half brother and sister too!", and someone else pointed out: "Yes, and he had.