Mo. Rev. Stat. § 233.410

If it shall appear that any land within the district so incorporated has been conveyed by mortgage or deed of trust, the mortgagor or owner of the equity of redemption, or if any land shall be owned by a minor, his conservator, or if any land shall have been conveyed or devised to a trustee to be held by him for the use or benefit of another for a number of years or during the life of such other, the trustee, or if any lands shall be held by any widow as a homestead or dower, then the widow and adult heirs, shall be deemed and held to be the owner of such land within the meaning of sections 233.320 to 233.445.