Possible Clues:

• Some siblings
• Soup marks are dispersed at sea by fellow to part of 14 and 19
• Being in the family way, they're what worries one about the sound of 27 across
• They are not relatively the same people at last
• Such siblings are different people at last
• British Railways get 16 across in the family way
• Bromine, astatine, fluorine, iodine and chlorine: are they in order?
• Are shortly in nuisances to a relative extent
• Queen entering worries members of the family
• Siblings (in arms or in law?)