Complex sentence: Two of the original six "Mozarabic" parishes of Toledo remain and have about two hundred families in an association of those claiming historical observance of the Mozarabic Rite.
Split into simpler sentences: Two of the original six "Mozarabic" parishes of Toledo remain. About two hundred families in Toledo belong to these parishes and form an association of those who claim that their families have always belonged to the Mozarabic Rite.